Sync settings
Your progress syncs across devices using a personal sync ID. No accounts, no email. The ID is the secret.
Your sync ID
Anyone with this ID can read or change your progress. Keep it private; share it only with your own devices.
Use a sync ID from another device
Paste the sync ID from your other device. We'll merge progress, not overwrite. Completed lessons on either side stay completed.
Reset all progress
Wipes your local progress and the remote sync data for this sync ID. Other devices will see empty progress after their next sync. Cannot be undone.